公开(公告)号：US20170211750A1

公开(公告)日：2017-07-27

申请号：US15328292

申请日：2015-07-31

Applicant: SONY CORPORATION

Inventor： Naoki YOTSUMOTO ,  Masashi TORIMOTO ,  Masaki OHNO ,  Takashi SATO

IPC: F21K9/237 ,  F21K9/238 ,  H04R1/02 ,  F21V3/00 ,  F21V17/12 ,  F21V8/00 ,  F21V29/70

Abstract: A bulb-type light source apparatus includes a light source and a light guide member. The light source is provided annularly. The light guide member includes an outer surface, a light-incident end surface opposing the light source, and an optical pattern portion configured to emit, from the outer surface, light that enters from the light-incident end surface.